216191357580 has 48 divisors (see below), whose sum is σ = 660366330624. Its totient is φ = 52410025920.

The previous prime is 216191357579. The next prime is 216191357587. The reversal of 216191357580 is 85753191612.

It is not an unprimeable number, because it can be changed into a prime (216191357587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163780672 + ... + 163781991.

It is an arithmetic number, because the mean of its divisors is an integer number (13757631888).

Almost surely, 2^216191357580 is an apocalyptic number.

216191357580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216191357580 is an abundant number, since it is smaller than the sum of its proper divisors (444174973044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216191357580 is a wasteful number, since it uses less digits than its factorization.

216191357580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327562686 (or 327562684 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 216191357580 in words is "two hundred sixteen billion, one hundred ninety-one million, three hundred fifty-seven thousand, five hundred eighty".